Vacuum tank



June 4 1929- J. c. COULOMBE VACUUM TANK File d Feb. 4 26, 1927 2 Sheets-Sheet 1 ni'rf s T I JOSEPH c. COULOMBE, or KoKoiuo, rnninlne.

7 flange portions 10 which are adapted to rest PatentedJune 4,- 1929.

VACUUM TANK.

Application filed February 26, 1927., Serial No. 171,216.

The invention relates to a vacuum tank'for feeding fuel to the carburettor of an internal combustion engine, of the type shown in my 1 f Patent No.'1,4;67,633, issued Sept. 11, 1923.

The object of this invention is to provide an eificient device economical to manufacture.

Another object of this invention is to pro- I vide means for easily and quickly priming the vacuum tank. V

In the drawings forming a part of this application: v

Figure l-is an elevation, partly sectional, -of the device.

Figure 2 is an elevation, partly sectional, of the operating chamber and mechanism. Figure 3 is a top view of the device.

An outer container 1 has a fuel outlet 2 leading to a carburetter (not shown) and a drain valve 3 in its bottom portion, its upper:

end is open to atmosphere and has a loosely fitting dust cap 1 overlapping its upper edges to keep out foreign matter. An operating chamber 5 is suspended within the container 1 so that its top 6 lies below the upperedges of container 1 and the bottom plate 7 is above the bottom of container 1. The sides, or cylindricalportion, of chamber 5 fitting freely.

' r I claim:

within the container 1 so that it may be readilywithdrawn from the container. A suction combination of an outer container having an open top, aloose fitting dust cap forthe open 1 on the dust cape, said dust cap having clearance holes for said fittings.

for quickly priming the lower container. A

cover 12 is provided with a lip 13 to conveniently allow the swinging of the cover 12 i I about the rivet 1a to expose the priming open- 7 ing 11. .Fuel poured through the opening 11 finds its wayto lower container byflowing lever mechanism 16 to operate the dumpvalve combination of an outer container having an open top, a loose fittingdust cap for thelopert over the top 6 and down along the sides be- 1 tween chamber 5 and the container sides. The plate 7 is removable from chamber 5 and has-mounted upon it the float 15and 17. The float 18 operates the atmosphere valve 19. The float 15 is not large enough to 18. The buoyancy point of float18 is at a higher level than that of float 15, sothat The dust cap 4; has an opening 11 sufficiently large to allow closed by theifloat 15. After valve-19' is valve 17 during the remainder of the dumpfi v I will close valve- 19 before thevalve 17 is closed,airmust be admitted through the dump ing cycle, and, in order to hasten the remain- 1 der of this dumping action, the air tube 20f is provided. The "float 15 isso proportioned.

to the weight of-valve'17 that the valve 17, will be open when the float 15.is im'mer sed and i there is no suction inthe chamber 5, but'will close. the valve 17 when there is no liquid in chamber 5. i

The operation of chamber Sis as follows With the valve mechanism inthe position shown in the drawlng and the connections properly connected to an engine,fuel will' flow into chamber 5 until .the atmosphere valve 19 is opened by float 18, when the valve 17 will be opened by the Heat 15 and allow the fuel to flow. by gravity into the container close and thereafter air will be admitted. to

When the fuel level recedes below the buoyancy point of float 18, the valve .19will chamberfi by the open valve'17'andtube'2O I until the fuel level recedes below the'buoyancy' point-offioat 15, when the valve 17 will close and theoperation is repeated.

lIIn a vacuum fuel feeding system, the

topof said container, an operating chamber .within said container and located belowsaid dust cap so asi-to form a pocket between the top of said operating chamberand' said dust cap.

2. In a vacuumfuel feeding system, the

combination *ofan outer container havingan open top, a loose fitting dust cap for the open top of said container, an'operating chamber top of said operating chamber andsaiddust" cap, ,andan opening in said dust cap to allow priming said container.

In a vaccum fuel top of said container, an operating chamber within'said container and located below said duct'cap so a's 'to form a pocket between the top of saidoperating chamber and saiddust feeding systempthe f cap, an opening in said dustcap to enable 7 priming said containeryand a cover for said dust cap'g one 01' more fittings secured to said opening secured to said dust cap. 7' operating chamber and extending through 41111 a Vacuum fuel feeding system, the said dust cap, shoulders on said fittings adapt- 10 comhinationo-f an outer container having an ed te'rest on said dust cap and; suspend the open top, a loose fitting dust cap for the open said operating chamber within the said contop ofsaid container; an operating chamber tainer. within said container andlecatedbelow said Q JOSEPH G. COULOMBE. 

